Gemini 3.5 Flash alternatives
Match · Updated July 2026
The closest alternative to Gemini 3.5 Flash is Muse Spark 1.1 — comparable intelligence (50.6 vs 50.2); for a cheaper option, GPT-5.6 Terra runs $1.00/M vs $1.50/M; and the best open-weight substitute is Kimi K3.
Closest match
Cheaper alternatives
gpt-5.6-terra
$1.00/M input · 55.0 intel
claude-sonnet-5:batch
$1.00/M input · 53.4 intel
gpt-5.4:batch
$1.25/M input · 51.4 intel
gpt-5.6-luna
$0.100/M input · 51.2 intel
glm-5.2
$0.966/M input · 51.1 intel
muse-spark-1.1
$1.25/M input · 50.6 intel
Smarter alternatives
Open-source alternatives
kimi-k3
57.1 intel · open weights · 1.0M ctx
glm-5.2
51.1 intel · open weights · 1.0M ctx
minimax-m3
44.4 intel · open weights · 1.0M ctx
minimax-m3:batch
44.4 intel · open weights · 524K ctx
deepseek-v4-pro
44.3 intel · open weights · 1.0M ctx
kimi-k2.6
44.2 intel · open weights · 262K ctx
Frequently asked
What is the best alternative to Gemini 3.5 Flash?
Muse Spark 1.1 is the closest alternative to Gemini 3.5 Flash, with an Intelligence Index of 50.6 (Gemini 3.5 Flash scores 50.2) at $1.25 per million input tokens.
Is there a cheaper alternative to Gemini 3.5 Flash?
Yes — GPT-5.6 Terra costs $1.00 per million input tokens versus $1.50 for Gemini 3.5 Flash, while staying within ~8 points of its Intelligence Index.
Is there an open-source alternative to Gemini 3.5 Flash?
Kimi K3 is the strongest open-weight alternative to Gemini 3.5 Flash — downloadable from Hugging Face and self-hostable, scoring 57.1 on intelligence.